It found birds of a feather are more likely to flock together.
A large study has found opposites do not attract when it comes to relationships.
For more than 80 per cent of traits explored, like political leanings and what people weighed at birth, partners were more likely to be similar than not.
The Times of London says researchers at the University of Colorado Boulder found birds of a feather are more likely to flock together.
The research examined 80,000 couples and found many shared things like their father's age, needing glasses, smoking, and having the same number of siblings.
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